package com.atguigu.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import lombok.extern.slf4j.Slf4j;
import org.slf4j.Logger;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.UUID;
import java.util.concurrent.TimeUnit;
@Slf4j
@Service
public class PaymentService {
    //正常访问肯定OK的方法
    public String paymentInfo(Integer id){
          return "线程池 :"+Thread.currentThread().getName()+"  paymentInfo_ok id:"+id+" O(∩_∩)O哈哈~";
    }

    @HystrixCommand(fallbackMethod = "paymentInfo_TimeOutHandler",commandProperties = {
            @HystrixProperty(name="execution.isolation.thread.timeoutInMilliseconds",value="3000")
    })
    public String paymentInfo_Timeout(Integer id){
         try {
             TimeUnit.SECONDS.sleep(5);
         }catch (Exception e){
            log.error("超时异常");
         }
//        int age=1/0;
        return "线程池 :"+Thread.currentThread().getName()+"  paymentInfo_Timeout  id:"+id+" O(∩_∩)O哈哈~"+"耗时3秒钟";
    }

    public String paymentInfo_TimeOutHandler(Integer id)
    {
        return "线程池:  "+Thread.currentThread().getName()+"  8001系统繁忙或者运行报错，请稍后再试,id:  "+id+"\t"+"o(╥﹏╥)o";
    }
   //===========服务熔断
   @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback",commandProperties = {
           @HystrixProperty(name = "circuitBreaker.enabled",value = "true"),//是否开启断路器
           @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold",value = "10"),//请求次数
           @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds",value = "10000"),//时间窗口期
           @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage",value = "60"),//失败率达到多少后跳闸
   })
   public String paymentCircuitBreaker(@PathVariable("id") Integer id) {
       if(id <0)
       {
           throw new RuntimeException("******id 不能负数");
       }
       String serialNumber = IdUtil.simpleUUID();

       return Thread.currentThread().getName()+"\t"+"调用成功，流水号: " + serialNumber;
   }
    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id)
    {
        return "id 不能负数，请稍后再试，/(ㄒoㄒ)/~~   id: " +id;
    }


}
